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Fluke Calibration Blog
Calibration Equipment & Standards and Calibration Software
Sep 30, 2013
A flowmeter measures the rate that fluid or gas moves through it. Test and measurement professionals use them in a wide variety of applications where accurate flow measurements are critical, including (but not limited to) HVAC, energy and utilities, water management, aerospace, agriculture and the pharmaceutical industry. In applications like these, it’s important to calibrate the flowmeters that make the measurements. Regular calibrations assure you that the flowmeter’s...
Aug 30, 2013
If you measure or calibrate pressure in the real world, you are at risk for contamination. And contamination can cause problems that you don’t even want to think about. A manufacturer in the aerospace industry found that out when they used their air system to calibrate a gauge that had water in it, then used it to calibrate another device that was supposed to be “dry and air pure.” That device was used on a water-free system under test and, you guessed it, water got into the system where...
Aug 22, 2013
I write this towards the end of the CALCON Conference at the Utah State University Campus in Logan, Utah. The conference is here because the Space Dynamics Laboratory is part of Utah State. CALCON is the "Conference on Characterization and Radiometric Calibration for Remote Sensing".
What is the difference between the radiometric calibration they speak of and the radiometric calibration I speak of when referring to radiation thermometry? In some aspects, I can answer this by saying...
May 20, 2013
Metrology is a very satisfying occupation but there will be roadblocks along the way. For some of us curve fitting is easy so long as we have a standard software package that solves our problem. But what do you do in a situation where your usual software program doesn’t work because you’re dealing with a non-linear equation? Such situations are not that exotic. For example, infrared thermometers are everywhere and typically impractical to adjust. If you want to provide a correction...
May 07, 2013
If you use Fluke Calibration electrical calibrators or software, chances are you and I have talked on the phone at least once.
I’ve been providing technical support for calibration products for the last 14 years; the last five as manager of a five-member team at Fluke Calibration. Together we field approximately 65 telephone calls each day, plus more than 2,300 emails per month (more than 8,000 emails in 2012). My team supports the Fluke Calibration electrical calibrators and standards,...
Mar 15, 2013
If you are planning to purchase an electrical calibrator this year, you may find this infographic helpful. It gives you an overview of how to go about making your selection, and it includes a table that will help you compare the Fluke Calibration family of electrical calibrators.
If you would like more details about selecting an electrical calibrator, you will find them here:
http://us.flukecal.com/products/electrical-calibration-0?quicktabs_tab=solution
...
Feb 08, 2013
When does height equal pressure? Well the simple answer is it doesn’t, but more on that later. A less simple answer is that height based pressure unit standards for manometers have evolved significantly over time. This has left an interesting legacy that you need to be aware of if you calibrate pressure instruments using height based units.
The SI unit for fluid pressure is the pascal (Pa), named after Blaise Pascal, a French mathematician and physicist who lived in the late 15th century...
Dec 17, 2012
For the 2012 racing season, I was invited by the Gregory family to be part of their U88 racing team. While our season didn’t always go our way, we had some great moments. Along the way, I found many of my metrology skills were invaluable.
When not working in the calibration laboratory, my spare time is spent working on unlimited hydroplanes (race boats). In my early days, the work consisted of fixing mechanical issues and a relay panel that was used to start the boat. As these boats use...
Nov 30, 2012
Three questions to ask yourself…plus four types of facts to gather
You go to your boss and say “I need a new calibrator.” The boss says, “Great, here’s a blank check, go ahead and buy whatever you need.” Ok, that’s the fantasy. In real life, the boss is likely to respond to your request with questions beginning with “Why…” and “How much…” And the first answer you’ll likely get is “No.” So how can you turn that “No” into “Yes,” or better still, get to “Yes” on the first try?
...
Nov 28, 2012
I’m a big fan of calibration baths. When I managed our temperature calibration laboratory, I relied on them. With a series of baths and a liquid nitrogen comparator, we were able to perform a large volume of accredited temperature calibrations with lower uncertainties from -197 °C to 500 °C than would have been possible in any other way. Sometimes we would get a probe that was large and bent, or very small, or had a large handle and it would slow us down, but it would not stop us, because the...
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